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    국내학술지 제목 게시판 내용
    제목(국문) 결정 소성학을 이용한 반구 박판 성형공정의 전산모사
    제목(영문) Computer Simulation of Hemispherical Sheet Forming Process Using Crystal Plasticity
    저자 심정길 (J.G.Shim ,한양대학교 일반대학원 ) ▷공저자네트워크등록하기
    금영탁 (Y.T.Keum ,한양대학교 기계공학부 ) ▷공저자네트워크등록하기
    초록 The hardening and the constitutive equation based on the crystal plasticity are introduced for the numerical simulation of hemispherical sheet metal forming. For calculating the deformation and the stressof the crystal, Taylor's model of the crystalline aggregate is employed. The hardening is evaluated by using the Taylor factor, the critical resolved shear stress of the slip system, and the sum of the crystallographic shears. During the hemispherical formig process, the texture of the sheet metal is evolved by the plastic deformation of the crystal. By calculating the Euler angles of the BBC sheet, the texture evolution of the sheet is traced during the forming process. Deformation texture of the BBC sheet is represented by using the pole figure. The comparison of the strain distribution and punch force in the hemispherical forming process between the prediction using crystal plasticity and experiment shows the verification of the crystal plasticitybased formulation and the accuracy of the hardening and constitutive equation obtained from the crystal plasticity.
    keyword Crystal Plasticity, Texture Evolution, Sheet Metal Forming, Work Hardening, Homogenization Method, Taylor Factor
    저널명 소성·가공 ▷관련저널보기
    VOL 16
    PAGE 276-281
    발표년도 2007
    국문File 국문다운로드
    영문File
    • 페이스북아이콘
    • 트위터 아이콘

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